KA01509K/09/EN/03.22-00
71599670
2022-12-26

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Operating Instructions*71599670* BriefRN4271599670

1-channel active barrier with 24 to 230 VAC/DC wide range power supply for the safe
separation of 0/4 to 20 mA standard signal circuits, HART-transparent

These Brief Operating Instructions are not a substitute for the Operating Instructions pertaining to the device.
Detailed information is provided in the Operating Instructions and other documentation.
Available for all device versions via:
• Internet: www.endress.com/deviceviewer• Smartphone/tablet: Endress+Hauser Operations app

Basic safety instructions
Requirements for the personnel

Hazardous area

The personnel must fulfill the following requirements for its tasks:‣ Trained, qualified specialists must have a relevant qualification for thisspecific function and task.
‣ Are authorized by the plant owner/operator.
‣ Are familiar with federal/national regulations.
‣ Before starting work, read and understand the instructions in the manualand supplementary documentation as well as the certificates (depending on
the application).
‣ Follow instructions and comply with basic conditions.

To eliminate danger to persons or the facility when the device is used in thehazardous area (e.g. explosion protection):‣ Check the nameplate to verify if the device ordered can be put to its intended
use in the hazardous area.
‣ Observe the specifications in the separate supplementary documentationthat is an integral part of these instructions.

Intended use
The active barrier is used for the safe isolation of 0/4 to 20 mA standard signal
circuits. An intrinsically safe version is optionally available for operation in Zone
2. The device is designed for installation on DIN rails in accordance with IEC60715.
Product liability: The manufacturer does not accept any responsibility fordamage that results from non-designated use and from failure to comply withthe instructions in this manual.

Operational safety
Risk of injury!
‣ Operate the device only if it is in proper technical condition, free from errors
and faults.
‣ The operator is responsible for interference-free operation of the device.

Product safety
This device is designed in accordance with good engineering practice to meetstate-of-the-art safety requirements, has been tested, and left the factory in acondition in which it is safe to operate.

Installation instructions• The device's IP20 degree of protection is intended for a clean and dry
environment.
• Do not expose the device to mechanical and/or thermal stress that exceeds
the specified limits.
• The device is intended for installation in a cabinet or similar housing. The
device may only be operated as an installed device.
• To protect against mechanical or electrical damage, the device must beinstalled in an appropriate housing with a suitable degree of protection
according to IEC/EN 60529.
• The device fulfills the EMC regulations for the industrial sector.

Incoming acceptance and product identification
Incoming acceptance
Check the following during incoming acceptance:• Are the order codes on the delivery note and the product sticker identical?
• Are the goods undamaged?
• Do the data on the nameplate match the ordering information on the deliverynote?
If one of these conditions is not met, please contact the manufacturer'ssales office.

Product identification
The following options are available for identification of the device:• Nameplate specifications• Extended order code with breakdown of the device features on the deliverynote

Name and address of manufacturer

Name of manufacturer:

Endress+Hauser Wetzer GmbH + Co. KG

Address of manufacturer:

Obere Wank 1, D-87484 Nesselwang

Model/type reference:

RN42

Certificates and approvals
For certificates and approvals valid for the device: see the data on thenameplate
Approval-related data and documents: www.endress.com/deviceviewer →(enter the serial number)

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Functional safety

Please refer to Safety Manual FY01034K for the use of the device insafety instrumented systems according to IEC 61508.

A SIL version of the device is optionally available. It can be used in safety
equipment in accordance with IEC 61508 up to SIL 2 (SC 3) .

Mounting
Mounting requirements
Dimensions
Width (B) x length (L) x height (H) (with terminals): 17.5 mm (0.69 in) x
116 mm (4.57 in) x 107.5 mm (4.23 in)Degree of protection

IP 20

Overvoltage categoryIIPollution degree

2Humidity

5 to 95 %Operating altitude,
hazardous area
version≤ 2 000 m (6 562 ft)

Operating altitude,
non-hazardous areaversion≤4 000 m (13 123 ft)

Insulation classClass II

Mounting location
The device is designed for installation on 35 mm (1.38 in) DIN rails inaccordance with IEC 60715 (TH35).

Installing a DIN rail device

NOTICE‣ When using in hazardous areas, the limit values of the certificates andapprovals must be observed.

The device can be installed in any position (horizontal or vertical) on the DIN rail
without lateral clearance from neighboring devices. No tools are required forinstallation. The use of end brackets (type WEW "35/1" or similar) on the DIN
rail is recommended as an end support for the device.
When installing several devices side by side, it is important to ensure thatthe maximum side wall temperature of 80 °C (176 °F) of the individual
devices is not exceeded. If this cannot be guaranteed, mount the devices ata distance from one another or ensure sufficient cooling.

Important ambient conditions–40 to 60 °C(–40 to 140 °F)

Ambient
temperature range

Storage temperature–40 to 80 °C(–40 to 176 °F)

Electrical connection
Connecting requirements

Power supply 1)

A flat-blade screwdriver is required to establish an electrical connection to screwor push-in terminals.

Supply voltage

AWG 24-14
0,25-2,5 mm²

1.

AWG 24-14
0,25-2,5 mm²

1.
7 mm (0,28")

Power consumption≤ 4.9 VA / 2.4 W (20 mA); ≤ 5 VA / 2.5 W (22 mA)

Power loss

≤ 2 W (20 mA); ≤ 2.1 W (22 mA)

Current consumption at 24 VDC≤ 0.1 A (20 mA); ≤ 0.1 A (22 mA)

Current consumption at 230 VAC≤ 0.02 A (20 mA); ≤ 0.02 A (22 mA)

3.
10 mm (0,39")

1.

2.

24 to 230 VAC/DC (-20% / +10%, 0/50/60 Hz)

1)2.

0,5-0,6 Nm5-7 lb In

The data apply for the following operating scenario: input active / output active /output load 0 Ω. When external voltages are connected to the output, the power loss
in the device may increase. The power loss in the device can be reduced by connecting
an external output load.

Input data
1

Electrical connection using screw terminals (left) and push-in terminals (right)

LCAUTION
Destruction of parts of the electronics‣ Switch off the power supply before installing and connecting the device.
NOTICE
Destruction or malfunction of parts of the electronics
ESD - Electrostatic discharge. Protect the terminals and HART sockets on‣
the front from electrostatic discharge.
‣ A shielded cable is recommended for HART communication. Observe
grounding concept of the plant.
Only use copper cables with a minimum temperature rating of
75 °C (167 °F) as the connecting cables.

Special connection instructions• Disconnecting devices and auxiliary circuit protective systems with suitable ACor DC values must be provided within reach in the building installation.
• A switch/power circuit breaker must be provided close to the device andclearly marked as a disconnecting unit for this device.
• A circuit breaker (nominal current ≤ 10 A; break capacity 6 kA; e.g. type B)
must be available within reach for the supply line.

Input signal range (underrange / overrange)

0 to 22 mA

Function range, input signal

0/4 to 20 mA

Transmitter supply voltage≥ 16.5 V / (20 mA)

Output data
Output signal range (underrange /overrange)

0 to 22 mA

Function range, output signal

0/4 to 20 mA

Transmission behavior

1:1 to input signal

Step reponse (10 to 90 %)≤ 1 msLoad≤ 500 Ω (for active mode)

Transmissible communication protocols

HARTAccuracies
Transmission error max. (0 to 20.5 mA)< 0.1 % / of full scale value (< 20 µA)

Temperature coefficient< 0.01 % /K

Important connection data
Performance characteristics

2Endress+Hauser

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HART communicators can be connected to the HART connection sockets.
Ensure that there is an adequate external load (≥ 230 Ω) in the output
circuit. If the external load is not sufficient, an internal 250 Ωcommunication resistor can be added to the measuring loop via thealternative terminal assignment (terminal 3.3.) to use the HART
connection sockets.

Galvanic isolation
Power supply to input/output

Testing voltage: 3 000 VAC 50 Hz, 1 min

Input to output

Testing voltage: 1 500 VAC 50 Hz, 1 min

For detailed technical data, see the Operating Instructions

Connecting the supply voltage
The power is supplied via terminals 1.1 and 1.2.

Quick wiring guide

Out
Ch1
3.1

3.2

3.3

24..230V
AC/DC
L/+ N/1.1 1.2

Ch1HARTHART

4.1 4.2 4.3

In2-W

4-W

4-W

2-W

In
4.1 4.2 4.3HARTCh1

3.1

3.2

3.3

Ch1Out1.1 1.2
1.1 1.2
24..230V
AC/DC
L/+ N/-HART2

Terminal assignment, top: power supply top; bottom: power supply bottom (option)

Display and operating elements

112
33
4

4
2

1
3

1

Display and operating elements, left: power supply top; right: power supply bottom (option)

Endress+Hauser

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1
2
3
4

Plug-in screw or push-in terminal
Green LED "On", power supply
Connection sockets for HART communication (channel 1)
DIN rail clip for DIN rail mounting

Local operationHardware settings / configuration
No manual hardware settings are required at the device for commissioning.
Attention must be paid to the different terminal assignment when connecting 2/4-wire transmitters. At the output side, the connected system is detected andautomatic switching takes place between the active and passive mode.

MaintenanceNo special maintenance work is required for the device.

4Cleaning
A clean, dry cloth can be used to clean the device.

Endress+Hauser